Add expand_pairlist method

freqtrade/plugins/pairlist/pairlist_helpers.py

@@ -0,0 +1,18 @@
+import re
+from typing import List
+
+
+def expand_pairlist(wildcardpl: List[str], available_pairs: List[str]) -> List[str]:
+    """
+    TODO: Add docstring here
+    """
+    result = []
+    for pair_wc in wildcardpl:
+        try:
+            comp = re.compile(pair_wc)
+            result += [
+                pair for pair in available_pairs if re.match(comp, pair)
+            ]
+        except re.error as err:
+            raise ValueError(f"Wildcard error in {pair_wc}, {err}")
+    return result

freqtrade/plugins/pairlistmanager.py

@@ -1,6 +1,7 @@
 """
 PairList manager class
 """
+from freqtrade.plugins.pairlist.pairlist_helpers import expand_pairlist
 import logging
 from copy import deepcopy
 from typing import Any, Dict, List
@@ -55,6 +56,13 @@ class PairListManager():
         """
         return self._blacklist
 
+    @property
+    def expanded_blacklist(self) -> List[str]:
+        """
+        Has the expanded blacklist (including wildcard expansion)
+        """
+        return expand_pairlist(self._blacklist, self._exchange.get_markets().keys())
+
     @property
     def name_list(self) -> List[str]:
         """
@@ -121,7 +129,7 @@ class PairListManager():
         :return: pairlist - blacklisted pairs
         """
         for pair in deepcopy(pairlist):
-            if pair in self._blacklist:
+            if pair in self.expanded_blacklist:
                 logmethod(f"Pair {pair} in your blacklist. Removing it from whitelist...")
                 pairlist.remove(pair)
         return pairlist